Carl Wilhelm Scheele

Carl Wilhelm Scheele was a Swedish chemist known for his discovery of several chemical elements and compounds, including oxygen, chlorine, and the vibrant green pigment known as Scheele's Green. His work in the 18th century greatly contributed to the field of chemistry, although his discovery of this bright green pigment later revealed its toxic properties due to its high arsenic content. Scheele's Green was widely used in various applications, from textiles to wallpapers, before the dangers of arsenic became well understood.